Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa869d82b2054c0b3e7d951791e6d5118e7ce6d984a9d2ccaedf985c578ecd8b' 
  AND token = '86fCRAgYrMkyFGLWYcAi0uVLH0nsH81uK/Fa+HdayIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}